[Beowulf] Can one Infiniband net support MPI and a parallel
pj at sgi.com
Thu Aug 14 00:00:45 PDT 2008
> creates a job cpuset which includes the specific cpus
> (vnodes) that have been allocated by the scheduler, and
> all the mems present (it currently makes no attempt to be
> clever about that).
I have recently open sourced a major user level C library, called
libcpusets, which includes routines to map cpus to their corresponding
memory nodes. See further the "User library support for cpusets"
section, at the bottom of:
Right now, just RPM forms of libcpuset (and the related libbitmask
on which it depends) are on the above website. As soon as I can
poke my webmaster, there should also be tarballs, as well as the key
documents directly web accessible.
See the libcpuset routine cpuset_localmems(). It maps a set of CPUs
to the set of matching Memory Nodes.
I won't rest till it's the best ...
Programmer, Linux Scalability
Paul Jackson <pj at sgi.com> 1.940.382.4214
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